Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States.
Nano Lett. 2013 Aug 14;13(8):3698-702. doi: 10.1021/nl401591k. Epub 2013 Aug 2.
We demonstrate the excitation and gate control of highly confined surface plasmon polaritons propagating through monolayer graphene using a silicon diffractive grating. The normal-incidence infrared transmission spectra exhibit pronounced dips due to guided-wave resonances, whose frequencies can be tuned over a range of ~80 cm(-1) by applying a gate voltage. This novel structure provides a way to excite and actively control plasmonic waves in graphene and is thus an important building block of graphene plasmonic systems.
我们利用硅的衍射光栅演示了通过单层石墨烯传播的高度限制的表面等离激元极化激元的激发和栅极控制。由于导波共振，正常入射的红外透射光谱表现出明显的下降，通过施加栅极电压，其频率可以在约 80cm-1 的范围内进行调节。这种新颖的结构提供了一种在石墨烯中激发和主动控制等离子体波的方法，因此是石墨烯等离子体系统的重要组成部分。
